液压支架是煤矿开采中经常应用的支护设备,压力在液压系统中的瞬变使得冲击以及噪声等现象经常出现。利用功率键合图建立了系统的数学模型,并利用MATLAB进行了仿真,通过仿真得出了影响动态特性的因素是多样的,并提出了有效解决这一问题的方法,即采用带卸荷阀芯的液控单向阀,为实际生产提供了理论依据。 Hydraulic support is often used in coal mining support equipment, pressure transient in the hydraulic system so that shock and noise phenomena often occur. The mathematical model of the system is established by using the power bond graph, and the simulation is done by using MATLAB. The factors that affect the dynamic characteristics are obtained through simulation. Various methods are put forward to solve this problem effectively, that is, The core of the check valve, for the actual production provides a theoretical basis.